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Clavella sciatherica, n.sp, a Parasitic Copepod of Gadus morrhua

Published online by Cambridge University Press:  06 April 2009

W. Harold Leigh-Sharpe
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Extract

The animal under consideration belonging to the family Lernaeopodidae was taken on a codling (Gadus morrhua), 13 ins. in length, caught at Plymouth several years ago, and preserved in formalin since that date. Although about twenty-six valid species of Clavella have been either recorded or described in detail, the subject of the present paper differs from them all in combining several of the more prominent characters of other species, notably the extreme length of the backwardly-arched cephalothorax taken together with the reduction of the “arms” (second maxillae) and their expansion into a disc so that the “bulla” or button appears to be almost directly affixed to the body. For this species I accordingly propose the name Clavella sciatheric.

Type
Research Article
Information
Parasitology , Volume 11 , Issue 1 , November 1918 , pp. 118 - 126
Copyright
Copyright © Cambridge University Press 1918

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References

1 Since recording the above, Michael G. L. Perkins, who followed my work, has presented me with upwards of a dozen specimens of Clavella, all of them of this new species though considerably larger in size, taken from various codling caught at Lowestoft in August 1918. The animals were located either on the roof of the buccal cavity, or on the floor of the pharynx, at the bases of the gill-arches, never on the gill-filaments.